Not very happy ! But glad my house didn't burn down !
They don't work ! Even though it appeared to be a factory sealed box , They seem to have been already deactivated . There is a little switch that has a plastic tab that has to be broken off to move the switch . this tab was not there. they had been deactivated . they don't work ! I'm just glad I didn't count on them working & just put them up . I went to Lowes & bought the same brand . First alert , Some things you should only buy in confidence . They were only about $10 more than the bad ones cost me . Very disappointed! Thats twice I've gotten a wrong item ! Whats up Ebay ?